scholarly journals Modifikasi Kotak Polistiren untuk Penyimpanan Dingin Sayur Kubis dengan Menggunakan Es Kering sebagai Media Pendingin

2021 ◽  
Vol 9 (2) ◽  
pp. 212
Author(s):  
Bagus Made Brahmanda Diputra ◽  
Ida Bagus Putu Gunadnya ◽  
I Putu Gede Budisanjaya
Keyword(s):  
Negative Impact ◽  
Visual Observation ◽  
Energy Calculation ◽  
Suitable Model ◽  
Equilibrium Calculation ◽  
Dry Ice ◽  
Cooling Medium ◽  
Energy Equilibrium ◽  
Hourly Observation ◽  
Modified Polystyrene

ABSTRAK Penelitian telah dilakukan pada kotak modifypolystyrene sebagai kotak pengiriman kubis segar menggunakan es kering sebagai media pendingin. Penelitian ini bertujuan untuk menguji kotak yang dimodifikasi untuk mengetahui kotak yang paling cocok dimodifikasi untuk menjaga kesegaran sayuran. Kotak polystyrene yang dimodifikasi dibuat dengan memisahkan kotak menjadi dua kompartemen, satu kompartemen untuk menempatkan es kering sebagai media pendingin, dan kompartemen lain untuk menyimpan kubis segar. Itu dibuat lima jenis kotak dimodifikasi, dua jenis media pendinginan mondar-mandir di bawah sayuran segar, sedangkan jenis sisanya menempatkan media pendingin di atas sayuran. Tes yang dilakukan selama 7 jam terdiri dari suhu di sekitar kotak, suhu di dalam kotak, dan suhu pusat kubis segar. Pengukuran lain yang dilakukan adalah berat es kering yang digunakan selama penyimpanan dingin, penurunan berat kubis segar, pengamatan visual kerusakan kubis segar, dan perhitungan keseimbangan energi. Menempatkan es kering di bawah kubis segar menyebabkan suhu tengah kubis segar jauh di atas suhu penyimpanan yang disarankan, 0oC, sementara menempatkan media pendingin di atas sayuran memberi dampak negatif pada sayuran di mana suhu tengah kubis segar di bawah 0oC untuk dua jenis kotak yang dimodifikasi, kecuali es kering yang ditempatkan di baskom yang terbuat dari piring zink. Berdasarkan perhitungan energi, terungkap bahwa hampir lebih dari 75% energi pendingin digunakan untuk mengatasi beban pendinginan di sekitarnya. Ditemukan bahwa kotak modifikasi yang paling cocok untuk menyimpan kubis segar adalah jenis kelima.    ABSTRACT Research had been carried out to modify polystyrene box as fresh cabbage delivery box using dry ice as a cooling medium. The research aims were to find out the most suitable model box to maintain the freshness of the vegetables. Modified polystyrene box was made by separating the box into two compartments, one compartment for placing dry ice, and another compartment for storing the fresh cabbage. The box was modified into five types which consisted of two types of the box where the cooling medium was placed below the fresh vegetable, while for the rest, the cooling medium was placed above the vegetable. The tests were performed for 7 hours with the hourly observation that consisted of the temperature surrounding the model box, temperature inside the box, and temperature of the center of the fresh cabbage. Other conducted measurements were the weight of dry ice used during cold storage, weight loss of fresh cabbage, visual observation on the deterioration of the fresh cabbage, and energy equilibrium calculation. Placing dry ice below the fresh cabbage caused the center temperature of the fresh cabbage to far above the recommended storing temperature, 0oC, while placing the cooling medium above the vegetable gave a negative impact on the vegetable where the center temperature of the fresh cabbage was below 0oC for the two types of model boxes, except for the fifth type box where dry ice was placed in a basin made of zink plate. Based on energy calculation it was revealed that almost more than 75% of cooling energy was used to overcome the surrounding cooling load. It was found that the most suitable model box for storing the fresh cabbage was the fifth type.

scholarly journals The Consequences of Corruption on Economic Growth in Mediterranean Countries: Evidence from Panel Data Analysis

2018 ◽  
Author(s):  
Hicham Boussalham
Keyword(s):  
Economic Growth ◽  
Fixed Effects ◽  
Negative Impact ◽  
Panel Data Analysis ◽  
Suitable Model ◽  
Fixed Effects Model ◽  
Mediterranean Countries ◽  
Individual Effects ◽  
The Individual ◽  
The Impact

This study attempts to assess the impact of corruption on economic growth in the Mediterranean countries, during the period from 1998 to 2007. Econometric analysis using panel regression has been adopted to test this effect. Individual effects models such as random effects model and fixed effects model were applied to the study sample of 160 observations, and to choose the suitable model, we implemented several tests. For our analysis, we used a basic model that includes the dependent variable GDP per capita as a factor of economic growth and the corruption perception index as the independent variable concerned. Then we completed the model with several standardized macroeconomic control variables mentioned above and applied the individual effects models. The outcomes illustrate that corruption has a negative impact on the selected Mediterranean countries’ economic growth.

scholarly journals PENGARUH MEDIA PENDINGIN DAN WAKTU TUNGGU TERHADAP POROSITAS, KEKERASAN DAN STRUKTUR MIKRO MATERIAL AL PADUAN (RONGSOKAN) MENGGUNAKAN METODE PENGECORAN EVAPORATIVE

JTAM ROTARY ◽  
2019 ◽  
Vol 1 (1) ◽  
pp. 23
Author(s):  
Komang Aria Kresna Kepakisan ◽  
Rudi Siswanto
Keyword(s):  
Aluminum Alloy ◽  
Visual Observation ◽  
Holding Time ◽  
Raw Material ◽  
Al Alloy ◽  
Cooling Medium ◽  
Length Increase ◽  
Alloy Material ◽  
Significant Length ◽  
Cooling Media

The purpose of this research is to know the effect of cooling media and holding time to porosity, hardness and micro structure of Al alloy material (scrap) using evaporative casting method. The method used in this research is the experimental method of smelting Al Alloy piston scrap and poured at 700°C in Styrofoam pattern mold with 10 and 15 minutes holding time, then cooled with medium air, brine, and water of PDAM for 30 minutes. The material used is excavator aluminum alloy (scrap) izumi piston with silicon aluminum alloy (Al-12% Si). The highest hardness value obtained from the results of cooling casting with the brine cooling medium for 10 minutes that is equal to 217,996 kg / mm2 average HV. At porosity, the highest value was obtained at holding time of 15 minutes with PDAM water cooling medium 5.088% against raw material. While the result of visual observation with 50x magnification of microstructure of specimen to raw material, Si material in raw material has significant length increase. The conclusion of the research results is that re-casting with variations of cooling medium and waiting time will increase hardness and increase porosity, except on brine cooling medium. Keywords: MTTR, MTTF, RCM (Reliability Centered Maintanance)

scholarly journals The Consequences of Corruption on Economic Growth in Mediterranean Countries: Evidence from Panel Data Analysis

2018 ◽  
Author(s):  
Hicham Boussalham
Keyword(s):  
Economic Growth ◽  
Fixed Effects ◽  
Negative Impact ◽  
Panel Data Analysis ◽  
Suitable Model ◽  
Fixed Effects Model ◽  
Mediterranean Countries ◽  
Individual Effects ◽  
The Individual ◽  
The Impact

This study attempts to assess the impact of corruption on economic growth in the Mediterranean countries, during the period from 1998 to 2007. Econometric analysis using panel regression has been adopted to test this effect. Individual effects models such as random effects model and fixed effects model were applied to the study sample of 160 observations, and to choose the suitable model, we implemented several tests. For our analysis, we used a basic model that includes the dependent variable GDP per capita as a factor of economic growth and the corruption perception index as the independent variable concerned. Then we completed the model with several standardized macroeconomic control variables mentioned above and applied the individual effects models. The outcomes illustrate that corruption has a negative impact on the selected Mediterranean countries’ economic growth.

METHOD OF CROP ENERGY CALCULATION, LOST BECAUSE OF THE NEGATIVE IMPACT OF TRACTOR’S PROPELLER ON THE SOIL

2015 ◽  
Vol 10 (3) ◽  
pp. 81-85 ◽  
Author(s):  
Хафизов ◽  
Ramil Khafizov
Keyword(s):  
Design Of Experiments ◽  
Negative Impact ◽  
Similarity Theory ◽  
Soil Characteristics ◽  
Regression Equation ◽  
Maximum Pressure ◽  
Energy Calculation ◽  
Number Of Factors ◽  
Crop Energy

The article highlighted the necessity to determine the dependence of maximum pressure of wheel propellers on the parameters of tractor, wheel and the soil characteristics, for calculation the crop energy, which was lost due to the negative impact of the tractor wheels on the soil. Using the theory of similarity, the criteria of similarity was defined and several options of dependence of maximum pressure of tractor wheels on the soil were identified, taking into account various factors. The use of the similarity theory helped to reduce the number of factors for the design of experiments while maintaining the informative value of the title of the regression equation.

Estrogen receptor modulation of some polyphenols extracted from Daucus carota as a probable mechanism for antifertility effect: An in silico study

2020 ◽  
Vol 19 (06) ◽  
pp. 2041004
Author(s):  
Mausumi Ganguly ◽  
Jnyandeep Hazarika ◽  
Shruti Sarma ◽  
Pranjal Bhuyan ◽  
Rita Mahanta
Keyword(s):  
Estrogen Receptor ◽  
Daucus Carota ◽  
Active Sites ◽  
Hydrophobic Interactions ◽  
Negative Impact ◽  
Binding Free Energy ◽  
Estrogen Signaling ◽  
Energy Calculation ◽  
Reproductive Hormone ◽  
Receptor Modulation

The seeds of Daucus carota, traditionally used by women in many countries to prevent conception, were proved to have negative impact on reproductive hormone levels as well as on the estrous cycles in albino mice affecting the fertility status. This study is an attempt to investigate the possible role of polyphenols present in the seeds in hampering the reproductive processes. The Molecular Docking, Molecular Dynamics (MD) simulation and binding free energy calculation studies reveal that six polyphenols present in the seeds can bind with the active sites of human Estrogen Receptor (ER) and may interfere in the estrogen signaling in human. These polyphenols were found to bind to a conservative pocket of ER[Formula: see text], which is comprised of residues 343–388, 421–428 and 525–540. Docking studies indicated the presence of strong hydrogen bonding, pi–pi interactions and numerous hydrophobic interactions that stabilize the ER[Formula: see text]-polyphenol complexes. The docked complexes were further subjected to MM/GBSA analysis to calculate binding free energies. Molecular dynamic simulation studies carried out for a period of 20[Formula: see text]ns revealed low RMS deviation values suggesting high accuracy of the docking poses and stability of the complexes. Out of the six polyphenols, catechin and epicatechin have shown highest binding affinity towards the ER[Formula: see text] receptor. These findings will help in identifying ER modulators of plant origin targeting ER alpha and predicting their effects on the reproductive hormone homeostasis. Moreover, this study may form preliminary basis for further identification of potential herbal antifertility agents.

The Consequences of Corruption on Economic Growth in Mediterranean Countries: Evidence from Panel Data Analysis

2018 ◽  
Author(s):  
Hicham Boussalham
Keyword(s):  
Economic Growth ◽  
Fixed Effects ◽  
Negative Impact ◽  
Panel Data Analysis ◽  
Suitable Model ◽  
Fixed Effects Model ◽  
Mediterranean Countries ◽  
Individual Effects ◽  
The Individual ◽  
The Impact

This study attempts to assess the impact of corruption on economic growth in the Mediterranean countries, during the period from 1998 to 2007. Econometric analysis using panel regression has been adopted to test this effect. Individual effects models such as random effects model and fixed effects model were applied to the study sample of 160 observations, and to choose the suitable model, we implemented several tests. For our analysis, we used a basic model that includes the dependent variable GDP per capita as a factor of economic growth and the corruption perception index as the independent variable concerned. Then we completed the model with several standardized macroeconomic control variables mentioned above and applied the individual effects models. The outcomes illustrate that corruption has a negative impact on the selected Mediterranean countries’ economic growth.

scholarly journals Development of Short-term Flood Forecast Using ARIMA

2021 ◽  
Vol 15 ◽  
pp. 68-75
Author(s):  
Wei Ming Wong ◽  
Mohamad Yusry Lee ◽  
Amierul Syazrul Azman ◽  
Lew Ai Fen Rose
Keyword(s):  
Time Series ◽  
Water Level ◽  
Arima Model ◽  
Information Criterion ◽  
Forecast Model ◽  
Visual Observation ◽  
Stationary Time Series ◽  
Suitable Model ◽  
Flood Forecast ◽  
Short Term

The aim of this study is to use the Box-Jenkins method to build a flood forecast model by analysing real-time flood parameters for Pengkalan Rama, Melaka river, hereafter known as Sungai Melaka. The time series was tested for stationarity using the Augmented Dickey-Fuller (ADF) and differencing method to render a non-stationary time series stationary from 1 July 2020 at 12:00am to 30th July 2020. A utocorrelation (ACF) and partial autocorrelation (PACF) functions was measured and observed using visual observation to identify the suitable model for water level time series. The parameter Akaike Information Information Criterion (AIC) and the Bayesian Information Criterion (BIC) were used to find the best ARIMA model (BIC). ARIMA (2, 1, 3) was the best ARIMA model for the Pengkalan Rama, with an AIC of 5653.7004 and a BIC of 5695.209. The ARIMA (2, 1, 3) model was used to produce a lead forecast of up to 7 hours for the time series. The model's accuracy was tested by comparing the original and forecast sequences by using Pearson r and R squared. The ARIMA model appears to be adequate for Sungai Melaka, according to the findings of this study. Finally, the ARIMA model provides an appropriate short-term water level forecast with a lead forecast of up to 7 hours. As a result, the ARIMA model is undeniably ideal for river flooding.

Chemical modification of the bacterial wall to determine sites of metal deposition

1978 ◽  
Vol 36 (2) ◽  
pp. 350-351
Author(s):  
T. J. Beveridge
Keyword(s):  
Electron Scattering ◽  
Metal Salt ◽  
Metal Deposition ◽  
Suitable Model ◽  
X Ray Diffraction ◽  
Subtilis Cell ◽  
Thin Sections ◽  
X Ray ◽  
Section Data ◽  
Metal Impregnation

The Bacillus subtilis cell wall provides a protective sacculus about the vital constituents of the bacterium and consists of a collection of anionic hetero- and homopolymers which are mainly polysaccharidic. We recently demonstrated that unfixed walls were able to trap and retain substantial amounts of metal when suspended in aqueous metal salt solutions. These walls were briefly mixed with low concentration metal solutions (5mM for 10 min at 22°C), were well washed with deionized distilled water, and the quantity of metal uptake (atomic absorption and X-ray fluorescence), the type of staining response (electron scattering profile of thin-sections), and the crystallinity of the deposition product (X-ray diffraction of embedded specimens) determined.Since most biological material possesses little electron scattering ability electron microscopists have been forced to depend on heavy metal impregnation of the specimen before obtaining thin-section data. Our experience with these walls suggested that they may provide a suitable model system with which to study the sites of reaction for this metal deposition.

Mitochondrial hyperfusion: a friend or a foe

2020 ◽  
Vol 48 (2) ◽  
pp. 631-644 ◽  
Author(s):  
Rajdeep Das ◽  
Oishee Chakrabarti
Keyword(s):  
Negative Impact ◽  
Cellular Stress ◽  
Cellular Homeostasis ◽  
Mitochondrial Population

The cellular mitochondrial population undergoes repeated cycles of fission and fusion to maintain its integrity, as well as overall cellular homeostasis. While equilibrium usually exists between the fission–fusion dynamics, their rates are influenced by organellar and cellular metabolic and pathogenic conditions. Under conditions of cellular stress, there is a disruption of this fission and fusion balance and mitochondria undergo either increased fusion, forming a hyperfused meshwork or excessive fission to counteract stress and remove damaged mitochondria via mitophagy. While some previous reports suggest that hyperfusion is initiated to ameliorate cellular stress, recent studies show its negative impact on cellular health in disease conditions. The exact mechanism of mitochondrial hyperfusion and its role in maintaining cellular health and homeostasis, however, remain unclear. In this review, we aim to highlight the different aspects of mitochondrial hyperfusion in either promoting or mitigating stress and also its role in immunity and diseases.

Health Communication: Implications for Diverse Populations

2011 ◽  
Vol 18 (1) ◽  
pp. 12-19
Author(s):  
Amy Hasselkus
Keyword(s):  
Health Care ◽  
Health Communication ◽  
Negative Impact ◽  
Linguistically Diverse ◽  
Good Health ◽  
The United States ◽  
Poor Health ◽  
Health Care Decisions ◽  
Diverse Backgrounds ◽  
Health Related

The need for improved communication about health-related topics is evident in statistics about the health literacy of adults living in the United States. The negative impact of poor health communication is huge, resulting in poor health outcomes, health disparities, and high health care costs. The importance of good health communication is relevant to all patient populations, including those from culturally and linguistically diverse backgrounds. Efforts are underway at all levels, from individual professionals to the federal government, to improve the information patients receive so that they can make appropriate health care decisions. This article describes these efforts and discusses how speech-language pathologists and audiologists may be impacted.

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